Expandable window fan

Details Expandable window fan Expandable window fan

1993-05-10

1995-01-17

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Protective screen or guard

Water or marine propellers

454210, F03D 1104

Patent

active

053821360

ABSTRACT:
A window fan having a housing with a bottom wall for mounting on a sill of a window opening, a front wall defining an air outlet, a rear wall defining an air inlet, a first side wall joined to the front wall and the rear wall, a second side wall joined to the front wall and the rear wall; and the first side wall defining an elongated opening extending between opposite ends thereof; a blower retained by the housing and activatable to produce air flow between the air inlet and the air outlet; a partition biased into a recessed position within the housing and movable through the elongated opening into a projecting position extending between the first end wall and one side of the window opening; and a latch for retaining the wall in its projecting position.

REFERENCES:
patent: 2228224 (1941-01-01), Benson
patent: 2436344 (1948-02-01), Winogrond
patent: 2487294 (1949-11-01), Belter
patent: 2846936 (1958-10-01), Copeland
patent: 4838151 (1989-06-01), Shin-Chin
patent: 4872399 (1989-10-01), Chaney
patent: 5190496 (1993-03-01), Shih-Chin

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